methemoglobin

methemoglobin is a topic covered in the Taber's Medical Dictionary.

To view the entire topic, please or .

Taber’s Cyclopedic Medical Dictionary 24th Edition Online + App from F.A. Davis and Unbound Medicine. Find 75,000 medical and nursing definitions. Download to iPhone, iPad, and Android. Explore these free sample topics:

-- The first section of this topic is shown below --

(mĕt-hē″mō-glō′bĭn)

To hear audio pronunciation of this topic, purchase a subscription or log in.

[Gr. meta, across, + haima, blood, + L. globus, globe]
SYMB: metHb. A form of hemoglobin in which the ferrous iron has been oxidized to ferric iron. Methemoglobin cannot transport oxygen. The presence of metHb in the blood may be due to toxic substances such as aniline dyes, potassium chlorate, or nitrate-contaminated water and to atypical responses to benzocaine-like analgesics, among other causes. Methemoglobin also is present in patients with a hereditary deficiency of methemoglobin reductase.

-- To view the remaining sections of this topic, please or --

(mĕt-hē″mō-glō′bĭn)

To hear audio pronunciation of this topic, purchase a subscription or log in.

[Gr. meta, across, + haima, blood, + L. globus, globe]
SYMB: metHb. A form of hemoglobin in which the ferrous iron has been oxidized to ferric iron. Methemoglobin cannot transport oxygen. The presence of metHb in the blood may be due to toxic substances such as aniline dyes, potassium chlorate, or nitrate-contaminated water and to atypical responses to benzocaine-like analgesics, among other causes. Methemoglobin also is present in patients with a hereditary deficiency of methemoglobin reductase.

There's more to see -- the rest of this topic is available only to subscribers.